Controlling mechanism



AM 7, i 925. 1,532,130

O. C. FROM CONTROLLING MECHANISM Filed Feb. 5 1924 Patented Apr. 7, 1925.

U IT STATES,

OWEN c. FROM, or

INCORPORATED, OF NEW YORK, N. Y.,

' 1,532,130 PATENT GFFECE.

NEW YORK, \N. Y.. ASSIGNOR T WESTERN ELECTRIC COMPANY,

a COBPORATION or NEW YORK.

CONTROLLING MECHANISM. I

Application filed, February- 5, 1924. Serial No. 690,707.

To all whom it may concern: I

Be it kn ivn that I, OWEN C. FROM, 2. citizen of thlUnited States of America, residing at New York, in the county of New 6 York and State of New York, have inentedcertain new and useful Improvements in Controlling Mechanisms, of which .the following is a full, clear, concise, and exact description.

10 This invention relates to controlling mechanisms and more particularly to those adapted for use in telephone and similar systems. I 4 Y The invention has for its. object a new and improved controlling and registering device which is arranged to guard against failures and improper operations.

A feature of the invention relates to the provision, in a mechanism where records are registered on one relay register device and then transferred to another registerdevice, of means including contacts on the relays of said first register for determining if the record has been transferred correctly. 5 Other advantages of the present invention will become more clearly understood from thefollowing detailed description and also from the appended claims. Referring to the drawing, the figure illustrates the invention as embodied in a .register controlling mechanism for controlling the operation of selector switches in.

an automatic switching system. At the left of the figure is shown a registering mecha- 85 nism comprising three separate registers 100, 101 andlOQQ The register 100 consists of four relays 112 to 115, inclusive, register 101 consists of relays 116 to 119, inclusive, and the register 102 comprises four relay registers 120 to 123, inclusive.

At the right of the figure is disclosed a second registering mechanism consisting ofthree registers 103, 104 and 105. In a. similar manner the register 103 comprises four .rclays 12 1 to 127, register 104 comprises four relays 128 to 131, while the register 105 includes four relays 132 to 135, inclusive.

The central port-ion of the figure illustrates a part of a connecting device 106 for associating the first set of registers with the second set ofregisters.

Theregisters 100, 101 and 102 constitute a part of a central otlice sender which receives digit impulses from a calling subscribers line or an operator s position. As

is common practice'in telephone systems of this character, a plurality of such senders are provided. each having its own set of registers similar to those shown. The incoming series of impulses received by the sender are recorded by operating the relays of the registers 100, 101 and 102 in various characteristic combinations. If the first digit is of a certain character, the relays 112 and 113, for instance, are operated while relays 114 and 115 remain deene-rgized. It the second digit is of a certain character, relays 118 and 119 are operated, whereas relays 116fland 117 remain inert'in response to the second series of impulses. In response to a third series of impulses relays 120, 122 and 123 may be operated, whereas relay 121 remains deenergized.

. Although only three sets of registers have been shown in connection with the sender illustrated, it will be understood that additional registers may be provided for recording other series' of impulses inconnection with a designation.

The three relay registers 103, 104 and "105are contained in a controlling mechanism which is separate from the sender and which receives the record set up on the.

registers 100, 1.01 and 102 to determine the operation of automatic selecting switches. Here there are also three such registers shown. Register 103 corresponds toth'e register 100, the register104 to the register '101 and the register 105 to the register 102.

Furthermore, the four relays in each of the latter registers correspond identically to the four relays of each of the registers 100. 101

and 102 in the sender. Inasmuch as there are a plurality of central oflice senders, it

becomes necessary to associate the controlling device at the right of the figure with any particular one of these senders. For this purpose the connecting mechanism 106 is provided. This mechanism consists of "a number of multicontact relays 107, 108, etc., each being individual to a separatesender and when operated serving to connect that sender to the controlling device shown.

In the operation of a telephone system employing controlling equipment of this character, records are being transferred fronrthe sender re isters to the registers in the switch control ing device respectively. Since the correct operation of the system depends upon the accurate transfer of these -records, it becomes a desirable matter to havesome way of making a check or performing a test on the apparatus each time such a record is transferred in order .to determine whether the same is being done correctly. Accordingly, the circuits are so arranged that the register relays 103 104 and 105, which receive the records from the sender registers, are tested each time a record is transferred, and also the contacts of the connecting device 106 are tested at the same time.

Assume'that the registers 100, 101 and 102 a are taken 'into use for recording three sets the registers 100, 101 and 102 to the registers 103, 104 and 105. At the same time or thereafter, a circuit. is closed in any suitable manner for'the relay 109. Relay 109 in up crating completes a circuit from ground circuit leads over the grounded conductor.

through its contact, contact of rela 110, conductor 137, contacts of relay 10 conductor 138, thence through the back contacts of relays 113 and-115, through contacts of relay 107, windings of relays 125 and 127- to battery. Other circuits lead over the grounded conductor 138, through the back contacts of relays 116, 118 and 119, through ,wntacts of relay 107, windings of relays 128, 130 and 131 to battery. Still another 138 through the back contact of relay 121, contact of relay 107, winding of relay 133 to battery.

Due to the fact that relays 112 and 114 are operated, a circuit is closed from ground through contact of relay 136, con d'uctor 139, front contacts of relays 112 and '114, thence through contacts of relay 107,

windings of relays 124 and 126 to battery. Another circuit leads over conductor 135) through the front contacts of relay 117, contact of relay 107, winding of relay 129 to battery. Still other circuits are traceable over grouned conductor 139,- through the front contacts of relays 120, '122 and 123, contacts of relay 1-07, windings of relays 132, 134 and 135 to battery; Thus, due to the fact that certain of the relays of the registers 100, 101 and 102 areoperated, the corresponding relays of the registers 103, 104 and 105 are also operated- The remain ing relays of these latter registers areop er'ated in circuits which lead through the connector device 106 and thence through the back contacts of all relays in the registers 100, 101 and 102, which have not been operated as a res rltof the established registration. In this manner each and every one of the relay registers 103, 101', and 105 are operated whenever a trunsfcr of a record is made in circuit-s which lead either over the front contacts of operated relays of the sender or over the back contacts of relays which are not operated.

As soon as all of the relays in the registcrs 103, 104 and 105 are operated, a chain circuit is established from ground, through the contacts of relays 12-1, 125, 120, 127, 131, 130, 129,128, 132, 133, 134 M1 135, conductor 140, winding of relay 111 to-battery.

Relay 111 operates and locks through con- -tact-of relay 109. Relay 111 at itsfleft contact closes a circuit for relay 110. Relay 110 in operating rcmoi-es ground from the conductor 137 whereby relays 125,127, 128,

130, 131 and 133 are released. Thus all relays in the registers 103, 104 and 105 which all relays of the registers 103, 104 and 105 have operated. If any of these relays fail to operate due to faulty windings, poor contacts in the connecting, device or due to afaulty front contact on one of the relays of the registers 100, 101 or 102, the relay 111 remains inert. Accordingly, the relay 111 may serve to initiate the further operation of the controlling device, consisting of the registers 103, 104 and 105.. This indicates that the test shows that a successful transfer of the record hasbeen made and that the apparatus may proceed with its controlling function.

When the equipment is no longer required, relay 107 is. released andldeenergizcd, thereby disconnecting the registers 100, 101 and 102 from the corresponding registers 103. 104 and 105. A controlling mechanism of this type is particularly applicable to telephone systems of the character illustrated in the patent to S. B, W'il:

liarns, No. 1,517,331, issued December 2, 199A.

hat is claimed is:

1. In combination, a plurality of registor devices for receiving records. electrical contacts on said devices, a second plurality of registers. means for transferring :1 record from the first registers to the sccond registers. and means including said contacts for determining if the rccord has been transferred correctly.

2. In combination, a plurality .bi registers, each comprising a number of relays for receiving records, a second plurality of registers, each comprising av number of re lays, means for transfcrring a record from the first registers .to the second registers,

. relays-ofsaid first re isters for detern1inand'means including back contacts on the ing if the record has een transferred corrcctly.

3. In combination, a register consisting of a'numbcr' of relays for receiving :1 record,-a second register comprlslng a number of corresponding relays, means controlled by the uuoperated relays of said first reg-- by the operated relays of the first register for operating the corresponding relays of the second register, and means controlled ister for operating the corresponding relays of the second register to determine if the registration has been correctly transferred from the first register to the second-register. v

4. In-combination, a register eomprisin" a number of relays for receiving a recorcf, a second register comprising a corresponding number of relays for receiving the rec- 0rd from the first register, means controlled the "for by the operated relays of the first register for operating the corresp'onding relays of the ys of the relays for receiving the record from the 7 all' relays of the second re ister which.

first register, means controlled by front contacts of the operated relays of the first register for operating the corresponding relays of the second register, means controlled by the back contacts of the unoperated relays of the first register for operating the corresponding relays of the second register, and means controlled ointly by the operated relays of the second register for releasing all relays of such register which correspond to the unoperated relays of the first register. Y

(i. In combination, a register consisting of a number of relays for receiving a rec- 0rd, a second register comprising a corresponding number of relays, a connecting device for interconnecting said registers, circuits controlled over the front contacts of the operated relays of said first re ister and leading through said connecting device for operating the corresponding relays of the second register, circuits controlled by the back contacts of the unoperated rela 's of said first'register and leading throng the connecting device to operate the corresponding relays of said second register, and means controlled jointly by all the operated relays of said second register for causing the release of all relays of the second register which correspond to unoperated relays of the first register. s 1

witness whereof,

I hereunto subscribe my name this 2nd day of February A, D.,

OWEN C. FROM. 

